Parallel submerged individual industrial units



Dec. 11, 1962 R. P. GRAHAM PARALLEL SUBME'RGED INDIVIDUAL INDUSTRIALUNITS 3 Sheets- Sheet 1 Filed May 8, 1959 INVENTOR. Richard P. Graham BYWITNESS Dec. 11, 1962 R. P. GRAHAM 3,067,705

PARALLEL SUBMERGED INDIVIDUAL INDUSTRIAL UNITS Filed May 8, 1959 3Sheets-Sheet 2 INVENTOR.

f Riqhard P. Graham Dec. 11, 1962 R. P. GRAHAM 3,067,705

PARALLEL SUBMEIRGED INDIVIDUAL INDUSTRIAL UNITS Filed May 8, 1959 3Sheets-Sheet 5 5| E 50 L. J a; 55 54 ,4, I -53 79 62 Flg. 5. s3 1 6| I.l INVENTOR. "R Richard. P. Graham WITNESS I BY v Ii -M TTOP/VEY UnitedStates Patent Ofihce enemas Patented Dec. 11, 1962 3,067,765 PARALLELSUBMERGED INDIVIDUAL INDUSTRIAL UNITS Richard P. Graham, Stratiord,Conm, assignor to The Singer Manufacturing Company, Elizabeth, N.J., acorporation of New Jersey Filed May '8, 1959, Ser. No. 811,909 Claims.(Cl. 112-258) This invention relates to power tables for sewing machinesand more particularly, to a power table for supporting a cylinder bedsewing machine such that both fiat and tubular Work may be accommodatedconveniently on the cylinder bed.

It is an object of this invention to provide a power table .arrangementfor supporting a cylinder bed sewing machine in a submerged fashion withrespect to the table top such that the cylinder bed is disposedsubstantially flush with the table top.

Another object of this invention is to provide a power table arrangementof the above character in which the elevation of the sewing machinecylinder bed relatively to the power table top may be selectivelyadjusted.

With the above and additional objects and advantages in view, as willhereinafter appear, this invention comprises the devices, combinations,and arrangements of parts hereinafter described and illustrated withaccompanying drawings of a preferred embodiment in which:

FIG. 1 represents a side elevational view of a power table embodying thefeature of this invention in which the table top is illustrated in crosssection and a sewing machine is illustrated in dashed lines,

FIG. 2 represents a top plan view of a power table top illustrating thesewing machine supported in place relatively to the table top,

FIG. 3 is an enlarged cross-sectional view taken substantially alongline 33 of FIG. 2,

FIG. 4 represents an enlarged horizontal cross-sectional view takensubstantially along line 44 of FIG. 1, and

FIG. 5 represents an enlarged cross-sectional view taken substantiallyalong line 55 of FIG. 1.

As illustrated in the drawings, the power table of this inventioncomp-rises a table top 11 supported by a plurality of leg members ofwhich one is indicated in 12 in FIG. 1. The table top is formed with arectangular aperture 13 sufficiently large as to accommodate insertiontherethrough of a sewing machine indicated generally as 14. The sewingmachine illustrated in FIGS. 1 and 2 is preferably of the cylinder bedVariety, such as the tacking machine illustrated in the Hale et a1.Patent No. 2,822,771, February 11, 1958. The sewing machine includes abase 15 from which rises a standard 16 supporting a cylinder bed 17above the base 15 and a bracket arm 18 overhanging the cylinder bed. Thesewing machine is fitted with a stop motion mechanism including awinging frame 19 controlled by a pull cable 20 for establishing adriving relation between the sewing machine main shaft 21 and aconstantly running belt 22. A second pull cable 23 may be used foropening a work clamp (not shown) or the like on the sewing machine. Arear cover member 24 is used to enclose the stop motion mechanism andother devices at the standard end of the sewing machine.

The table top aperture 13 is rabbetted, as at 3% to accommodate theshoulders 31 of a pair of inserts 32 and 33 so as to support the insertssubstantially flush with the table top. The insert 32 snugly embracesthe sewing machine standard 16 and the rear cover member 24 while theinsert 33 only partly fills the space between the walls of the aperture13 and the sewing machine cylinder bed. Each of the inserts 32 and 33 islocked in place by means of a plurality of turn buttons 34 fixed beneaththe inserts chine.

and cooperating each with a striking plate 35 fixed beneath the tabletop.

Secured beneath the table top 11 at each side of the aperture 13 aretapped fittings similar to floor flanges each of which threadedlyaccommodates a depending hollow sleeve member 41. Carriage bolts 42 inthe table top passing through the tapped fittings 40 and concentricallythrough the sleeve members 41 support angle iron rails 43 and 44 insubstantially parallelism one at each side of and beneath the table topaperture 13. The hollow sleeve members provide adjustable spacers forregulating the proximity of the rails to the table top with nuts 45 onthe carriage bolts serving to lock the rails in place.

A bracket 46 secured by screws 47 to the rail 44 carries a pair ofresilient cushioning members 48 for supporting one side of the sewingmachine base. A bracket 49 secured by a screw 56 to the rail 43 isfitted with a block of resilient material 5i. upon which the oppositeside of the sewing machine base rests. A drip pan 52 is secured bymachine screws 53 to a pair of depending bosses 54 on the bracket 46 anda depending boss 55 on the bracket 49. The drip pan 52 thus spans therails 43-44 beneath the sewing machine and locks the rails together as aunit to provide a steady support for the sewing maof the drip panaccommodates a conventional oil collecting jar attachment 57. The drippan 52 is formed with a pair of bearing lugs 5858 for a rock shaft 59controlled by means of a chain 66 connected to a treadle or the like andhaving a rock arm 61 to which the pull cable 20 of the stop motionmechanism is attached. Also formed beneath the drip pan 52 are bearinglugs 6262 for a rock shaft 63 controlled by a chain 64 connected to atreadle or the like and having a rock arm 65 to which the pull chain 23of the work clamp opening mechanism is attached.

Secured in position spanning the rails 43, 44 adjacent to the sewingmachine drip pan is a support plate 7d for a rear cover member 24 of thesewing machine. The rear .cover 24 encloses the work clamp openingmechanism and the stop motion mechanism as well as the sewing machinedriving belt 22. The belt 22 is driven by a pulley 73 fast on the shaftof an electric motor 74. The electric motor is secured to a carrierplate 75 which is pivoted as at 76 at one side to a bracket 77 securedto the rail 43. The bracket 77 is secured in selected angular positionabout the pivot 76 by means of a bolt 78 depending from a bracket 79secured to the rail 44. The tension in the driving belt 72 may thus beadjusted by means of the bolt 78.

With the arrangement of the present invention, the sewing machine 14,the sewing machine driving motor 74 together with the drip pan and thecontrol mechanism for the sewing machine are all carried by commonsupporting means in the form of the parallel rails 43 and 44 beneath thetable top. Any adjustments of the position of the rails 43, 44 for thepurpose of locating the cylinder bed 17 at a desired elevationrelatively to the table top, therefore, will not disturb the motor 74relatively to the sewing machine nor will it affect the driving belttension or the control connections to the sewing machine.

As illustrated in FIG. 2, the sewing machine is preferably arranged withthe cylinder bed extending substantially parallel to the front edge 80of the table top which front edge may be indented as at 81 in front ofthe cylinder bed for more convenient access to the stitching area by themachine operator.

With the cylinder bed 17, the insert 33, and the table top 11 beingdisposed substantially flush, flat work may be accommodated convenientlyby the sewing machine. The space available between the cylinder bed 17and the A drain pipe 56 threaded into the lowest point insert 33 at eachside is preferably as wide as the cylinder bed 17. This .space issufficiently large to accommodate tubular articles on the cylinder bedand yet sufiiciently small that it may be bridged readily by a flatpiece of fabric being stitched by the sewing machine.

As illustrated in the drawings, therefore, the sewing machine canaccommodate either flat or tubular work With equal convenience. If itshould be contemplated to sew continuously on flat work with no occasionfor tubular 'work, then a fiat cover or bed extension (not shown) ofconventional design may be applied to the cylinder bed 17 to bridge thespace between the cylinder bed 17 and the insert 33.

Having thus set forth the nature of this invention, what I claim hereinis:

1. A sewing machine power table having a table top formed with a sewingmachine accommodating aperture, leg means secured to said table top forsupporting said table top in elevated position, a pair of rails disposedbeneath and parallel to said table top at opposite sides of saidaperture, a plurality of threaded bolts secured in said table top andsuspending said rails in spaced relation therebeneath, an extensiblespacer member associated with each of said threaded bolts and arrangedbetween the rail and the table top to limit the proximity therebetween,a sewing machine provided with a casing formed with a work supportingsurface, means spanning said pair of rails for supporting said sewingmachine in said table top aperture, with the work supporting surface ofsaid sewing machine casing disposed substantially flush with said tabletop, an electric sewing machine driving motor, means spanning said pairof rails for supporting said electric motor relatively to said sewingmachine, and means drivingly connecting said sewing machine and saidelectric motor.

2. A power table for a sewing machine, said sewing machine provided witha casing including a base, a standard rising from said base, a cylinderbed projecting from said standard and a bracket arm carried by saidstandard overhanging said cylinder bed, said power table comprising atable top formed with an aperture larger than the vertical projection ofsaid sewing machine casing, leg means secured to said table top forsupporting said table top in elevated position, a pair of rails disposedbeneath and parallel to said table top at opposite sides of saidaperture, means for suspending said rails from said table top atselected distances therebeneath, and means spanning said pair of railsfor supporting said sewing machine base 4 beneath said table top withsaid cylinder bed disposed substantially flush with said table top.

3. A sewing machine, a cylinder bed provided on said sewing machine andformed with a work supporting surface, a sewing machine power tableincluding a plurality of leg means, a work supporting table top securedon said leg means, means on said power table for supporting said sewingmachine with the cylinder bed substantially flush with the table top,said power table top formed with a sewing machine accommodatingaperture, a plurality of floor flanges secured beneath said table top,one pair disposed at each side of said aperture, carriage bolts securedin said table top and extending one through each of said floor flanges,a pair of rails disposed substantially parallel to and beneath saidtable top, said rails being apertured each to accommodate the pair ofcarchine in said table top aperture.

4. A power table for a sewing machine as set forth in claim 2 in whichan insert is carried in said table top aperture and disposed partlyfilling the space between the edges of the table top aperture and thesewing machine cylinder bed.

5. A power table for a sewing machine as set forth in claim 2 in whichthe front edge of said power table top is formed between the extremitiesthereof with an indentation toward said aperture, and in which saidmeans spanning said pair of rails for supporting said sewing 'machinebase is adapted to support said sewing machine with said cylinder beddisposed substantially parallel to said indentation in the front edge ofsaid table top.

References Cited in the file of this patent UNITED STATES PATENTS262,500 Sweeney Aug. 8, 1882 1,299,143 De Voe Apr. 1, 1919 2,116,433Hallowell May 3, 1938 2,477,433 Webb July 26, 1949 2,723,637 Sauer Nov.15, 1955 2,960,050 Lukins Nov. 15, 1960

